Laquida has a circular garden with a radius of 4.5 ft. She wants to put a vinyl fence around half of her garden and a wooden fence around the other half. The vinyl fencing is sold in panels that are 36 inches long. If the vinyl fencing cost $23.00 for each 36-inch panel, about how much will the vinyl fencing cost?Use 3.14 for . A.$14
B.$115
C.$220
D.$650
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Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?